Resistance to necrotic, vulnerable to radiant. Can only be healed by half the amount. A couple of spells (maybe just charm) and some stat bonuses (strength and dex). Maybe a bite and an unarmed attack (1d4 or 1d6). Maybe give this a small chance (10%) to turn target into a vampire (with disadvantage if not willing - if willing, auto success). Sunlight sensitivity from drow. Maybe a +1 damage boost vs targets that can bleed when using the above attacks. Extra damage from wooden/silvered weapons. Probably make it slightly better than all other races, but she has to deal with all the shit a vampire would get from people (distrust at the least, armed mobs at the most).